把这句话改为被动语态..I couldn't find my maths book anywhere last night.改为被动语态.

把这句话改为被动语态..I couldn't find my maths book anywhere last night.改为被动语态. I've hidden those trees for almost a week.把这句话改为被动语态 把句子改为被动语态 德语把主动语态改为被动语态 I watered fiowers yesterday 改为被动语态 I can play baseball 改为被动语态 I saw him dancing.改为被动语态 把这些句子改为被动语态 请把句子改为被动语态! I lost my mind改为被动语态I lost my watch 这一句也改为被动语态 把I saw hiom walk into the next room just now.改为被动语态 把I often hear him play the piano all day 改为被动语态 怎么把 i often listen to him play the violin改为被动语态 Do people use knives to cut things ? 这句话改为被动语态Do people use knives to cut things ? 这句话改为被动语态怎么改? people know that he is able to do it well 改为被动将这句话改为被动语态 被动语态改为主动语态 这句话怎么改为被动语态?I want to do it again.I want it to be done again可以吗 这两个英语句子改为被动语态!